This is a must to read article for any system administrator who administers Microsoft Windows Servers. One of any system administrator duties, would be to upgrade a current domain controller to a new hardware server. One of the crucial steps required to successfully migrate your domain controller, is to be able to successfully transfer the FSMO roles to the new hardware server. FSMO stands for Flexible Single Master Operations, and in a forest there are at least five roles. In this article, I will be showing you how to transfer the FSMO in Windows Server 2008, and in my next article, I will show you the complete steps required to successfully migrate/upgrade your domain controller to a new hardware server.

The five FSMO roles are:

Schema Master

Domain Naming Master

Infrastructure Master

Relative ID (RID) Master

PDC Emulator

The FSMO roles are going to be transferred, using the following three MMC snap-ins :

Active Directory Schema snap-in : Will be used to transfer the Schema Master role

Active Directory Domains and Trusts snap-in : Will be used to transfer the Domain Naming Master role

Active Directory Users and Computers snap-in : Will be used to transfer the RID Master, PDC Emulator, and Infrastructure Master roles

Note: The following steps are done on the Windows Server 2008 machine that I intend to set as the roles holder ( transfer the roles to it )

Lets start transferring the FSMO roles.

Using Active Directory Schema snap-in to transfer the Schema Master role

You have to register schmmgmt.dll in order to be able to use the Active Directory Schema snap-in

Click Start > Run

Type regsvr32 schmmgmt.dll

Click OK

A popup message will confirm that schmmgmt.dll was successfully registered. Click OK

Click Start > Run, type mmc, then click OK

Click File > then click Add/Remove Snap-in…

From the left side, under Available Snap-ins, click on Active Directory Schema, then click Add > and then click OK

From the listed Domain Controllers, click on the domain controller that you want to be the schema master role holder and then click on OK

You will receive a message box stating that the schema snap-in is not connected to a schema operations master. That is for sure, as we have not yet set this Windows Server 2008 domain controller as a Schema Master role holder. This will be done in the next step. Click OK

In the console tree, right click Active Directory Schema [DomainController.DomainName], and then click Operations Master…

On the Change Schema Master page, the current schema master role holder will be displayed ( ex. ELMAJ-DC.ELMAJDAL.NET) and the targeted schema holder as well (ex. ELMAJ-DC2K8.ELMAJDAL.NET). Once you click Change, the schema master holder will become ELMAJ-DC2K8.ELMAJDAL.NET , click Change

Click Yes to confirm the role transfer

The role will be transferred and a confirmation message will be displayed. Click OK

Then click Close, as you can see in the below snapshot, the current schema master is ELMAJ-DC2K8.ELMAJDAL.NET

Using Active Directory Domains and Trusts snap-in to transfer the Domain Naming Master Role

You will have three Tabs, representing three FSMO roles (RID, PDC, Infrastructure). Click the Change button under each of these three tabs to transfer the roles.

Click Yes to confirm the role transfer

The role will be transferred and a confirmation message will be displayed. Click OK

As for the Infrastructure role, once you click on the Change button you will receive the below message

By default, when you first install your first Domain Controller, it holds the five roles and beside that it is a Global Catalog. If your environment is a multi-domain/forest, then you should think about structuring your FSMO roles and transfer the Infrastructure role to a none Global Catalog domain controller. Else if you have small number of domain controllers ( ex. two domain controllers) then you should not worry about this. Click Yes

The Tabs should now look like this:

That’s it, by now, you have successfully transferred the five FSMO roles to the Windows Server 2008 Domain Controller.

Summary

There are five FSMO roles in a forest, to transfer any of these roles you have to use the appropriate Active Directory snap-in. In my next article, I will be showing you the complete steps required to successfully migrate/upgrade your domain controller to a new hardware server.